动态下拉选择问题

Question

尝试使用Selenium Web Driver在

Rahul Shetty Academy网站

上选择出发城市时，未选择使用

XPath

选择的出发城市。我的代码位于星号下方，我在星号内收到以下错误。

例外：

Exception in thread "main" org.openqa.selenium.NoSuchElementException: no such element: Unable to locate element: {"method":"xpath","selector":"//input[@selectedvalue='BLR']"}
      (Session info: chrome=121.0.6167.85)
    For documentation on this error, please visit: https://www.selenium.dev/documentation/webdriver/troubleshooting/errors#no-such-element-exception
    Build info: version: '4.17.0', revision: 'e52b1be057*'
    System info: os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '14.2.1', java.version: '17.0.9'
    Driver info: org.openqa.selenium.chrome.ChromeDriver
    Command: [f9e14578261c798b2021551ffe86d360, findElement {value=//input[@selectedvalue='BLR'], using=xpath}]
    Capabilities {acceptInsecureCerts: false, browserName: chrome, browserVersion: 121.0.6167.85, chrome: {chromedriverVersion: 121.0.6167.85 (3f98d690ad7e..., userDataDir: /var/folders/md/pyls622d4kd...}, fedcm:accounts: true, goog:chromeOptions: {debuggerAddress: localhost:61894}, networkConnectionEnabled: false, pageLoadStrategy: normal, platformName: mac, proxy: Proxy(), se:cdp: ws://localhost:61894/devtoo..., se:cdpVersion: 121.0.6167.85, setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify, webauthn:extension:credBlob: true, webauthn:extension:largeBlob: true, webauthn:extension:minPinLength: true, webauthn:extension:prf: true, webauthn:virtualAuthenticators: true}
    Session ID: f9e14578261c798b2021551ffe86d360
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
        at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
        at org.openqa.selenium.remote.codec.w3c.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:185)
        at org.openqa.selenium.remote.codec.w3c.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:134)
        at org.openqa.selenium.remote.codec.w3c.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:51)
        at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:190)
        at org.openqa.selenium.remote.service.DriverCommandExecutor.invokeExecute(DriverCommandExecutor.java:216)
        at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:174)
        at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:519)
        at org.openqa.selenium.remote.ElementLocation$ElementFinder$2.findElement(ElementLocation.java:165)
        at org.openqa.selenium.remote.ElementLocation.findElement(ElementLocation.java:59)
        at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:356)
        at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:350)
        at DynamicDropdowns.main(DynamicDropdowns.java:19)

---

DynamicsDropdown 类：

import org.openqa.selenium.By;
    import org.openqa.selenium.WebDriver;
    import org.openqa.selenium.chrome.ChromeDriver;



    public class DynamicDropdowns {

    public static void main(String[] args) throws InterruptedException {
        // TODO Auto-generated method stub
        System.setProperty("webdriver.chrome.driver",         "/Users/mfigures/Documents/COFTA/chromedriver-mac-x64/chromedriver");
        
        WebDriver driver = new ChromeDriver();
        driver.get("https://rahulshettyacademy.com/dropdownsPractise/");
        
        //input[@selectedvalue="BLR"]
        //input[@selectedvalue="MAA"]
        driver.findElement(By.id("ctl00_mainContent_ddl_originStation1_CTXT")).click();
        Thread.sleep(2000);
        
        driver.findElement(By.xpath("//input[@selectedvalue='BLR']")).click();
        driver.findElement(By.xpath("//input[@selectedvalue='MAA']")).click();
    
    }
}

Answer 1

您的下拉容器将在单击后一段时间后呈现。 您需要添加等待渲染条件。

要正确处理这种情况，您需要等待下拉选项出现，然后您需要单击它，等待它不可见，再次获取下拉选项并过滤可见选项。

WebDriverWait wdwait = new WebDriverWait(driver, 10);
driver.get("https://rahulshettyacademy.com/dropdownsPractise/");
wdwait.until(ExpectedConditions.presenceOfAllElementsLocatedBy(By.id("ctl00_mainContent_ddl_originStation1_CTXT")))
                .get(0)
                .click();
WebElement from = wdwait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("#dropdownGroup1 [value=BLR]")));
from.click();
wdwait.until(ExpectedConditions.invisibilityOf(from));
WebElement to = wdwait.until(ExpectedConditions.presenceOfAllElementsLocatedBy(By.cssSelector("#dropdownGroup1 [value=MAA]")))
                .stream()
                .filter(WebElement::isDisplayed)
                .findFirst()
                .get();
to.click();